CN101689472A - Illuminant mixture for a discharge lamp and discharge lamp, in particular an hg low pressure discharge lamp - Google Patents
Illuminant mixture for a discharge lamp and discharge lamp, in particular an hg low pressure discharge lamp Download PDFInfo
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- CN101689472A CN101689472A CN200880024625A CN200880024625A CN101689472A CN 101689472 A CN101689472 A CN 101689472A CN 200880024625 A CN200880024625 A CN 200880024625A CN 200880024625 A CN200880024625 A CN 200880024625A CN 101689472 A CN101689472 A CN 101689472A
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- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7784—Chalcogenides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
- H01J61/44—Devices characterised by the luminescent material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
- H01J61/48—Separate coatings of different luminous materials
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Abstract
The invention relates to an illuminant mixture for a discharge lamp (1) with a first and at least one second illuminant composition, said first illuminant composition having an emission spectrum in the green to yellow spectral range and having a first illuminant compound, devoid of Tb and designed to absorb the UV radiation emitted by an Hg source. The invention also relates to a discharge lamp (1) with a discharge vessel (2) and an illuminant layer (12) applied thereto, said layer containing the illuminant mixture according to the invention.
Description
Technical field
The present invention relates to a kind of luminescent material mixture that is used for discharge lamp, wherein this luminescent material mixture has first and at least one second luminescent material component.In addition, the invention still further relates to a kind of discharge lamp, on this discharge vessel, be built with luminous material layer with discharge vessel.
Background technology
Coating for low-pressure mercury discharge lamp, usually use the luminescent material with green blue, redness to be used to carry out the radiation conversion, so that in the scope of Judd line (Juddsche Gerade), can realize for example the colour temperature within standardized IEC colour tolerance scope greater than 2500K.Nowadays the luminescent material mixture (for example BAM, CAT, YOE) that usually adopts will be that the radiation of 185nm and 254nm is transformed in the visible light by the wavelength of low-pressure mercury discharge generation in this major part.
Utilize the luminescent material that contains rare earth to realize the highest efficient at present.At this, the emission spectrum that is arranged in green spectral range of luminescent material is realized by the emission of Tb (terbium) basically, and the emission that is arranged in red color spectrum range of luminescent material mixture realizes by doping Eu (europium).That exist, that launch in blue spectral range in case of necessity luminescent material part or luminescent material component for the luminescent material mixture realize emission by doping Eu equally.For the luminescent material component (CAT, LAP and CBT) of the current common employing that is used for launching, except mixing, Tb also adopts less partial C e (cerium), to improve UV-Vis radiation conversion in green spectral range.Tb is comparatively expensive material, has improved the cost of luminescent material mixture thus and has therefore also improved the cost of discharge lamp.
Summary of the invention
Task of the present invention is to propose a kind of luminescent material mixture and a kind of discharge lamp that is used for discharge lamp, utilizes it can realize efficiency grade A and high color rendition degree, wherein additionally should reduce the cost of luminescent material mixture and discharge lamp.
This task solves by having according to the luminescent material mixture of the feature of claim 1 and the discharge lamp that has according to the feature of claim 29.
The luminescent material mixture that is used for discharge lamp according to the present invention has first and at least one second luminescent material component.The first luminescent material component has the emission spectrum in green and/or yellow spectrum scope, and the first luminescent material component comprises first illuminant compound in addition, and this first illuminant compound does not have Tb ground and makes up and be fabricated in addition UV (ultraviolet) radiation that is used to absorb by the emission of Hg source.The efficiency grade A of lamp can be reached by such luminescent material mixture, and 80 high color rendition degree can be realized in addition.Can be lowered into the local luminescent material mixture of making in addition.Utilization luminescent material mixture according to the present invention can guarantee the identical or especially higher efficient with luminescent material mixture of the prior art, wherein especially first illuminant compound of the first luminescent material component does not have the design of Tb ground, therefore and can not have this luminescent material mixture of Tb ground realization fully, measuring with the Tb that obviously reduces in the second luminescent material component of this luminescent material mixture or another other luminescent material components in the time of perhaps most of provides this luminescent material mixture.
Preferably, the luminescent material mixture is fabricated first illuminant compound that makes the luminescent material component of winning and is fabricated the UV radiation that is used for being absorbed and is transformed into its emission spectrum.
Preferably design is recently to regulate the colour temperature of luminescent material mixture institute radiation emitted according to the scalable quality between the first and second luminescent material components.
The mass fraction of the first luminescent material component preferably is less than or equal to 50%.Especially, utilize this luminescent material mixture can preferably regulate colour temperature greater than 2500K.Therefore, utilize this luminescent material mixture also can in the scope of Judd straight line, realize having fluorescent lamp greater than the colour temperature of 2500K.Realized the total color rendering degree in 80 scope.
Preferably, first illuminant compound of the first luminescent material component has strong absorption for wavelength less than the radiation of 440nm.At this, strong absorption means, in 45 °/0 ° is measured for how much, the reflectivity of the powder sheet (Pulvertablette) that is extruded with respect to the Al2O3 standard less than 60%.
Preferably, first illuminant compound of the first luminescent material component has very strong absorption for wavelength for the radiation of about 254nm.At this, very strong absorption means, in 45 °/0 ° is measured for how much, the reflectivity of the powder sheet that is extruded with respect to the Al2O3 standard less than 40%.
Preferably, this luminescent material mixture first illuminant compound of being designed so that the first luminescent material component has weak absorption for wavelength greater than the radiation of 530nm.At this, weak absorption means, in 45 °/0 ° is measured for how much, the reflectivity of the powder sheet that is extruded with respect to the Al2O3 standard greater than 90%.
Preferably, to make up emission spectrum to the dominant wavelength between the 570nm according to first illuminant compound of the first luminescent material component of luminescent material mixture of the present invention at 530nm.
Especially, the luminescent material mixture is built as the half breadth of emission band of first illuminant compound that makes the luminescent material component of winning less than 100nm.
Preferably, first illuminant compound of the first luminescent material component has orthosilicate.
Preferably (Ca) 2SiO4 forms orthosilicate for Ba, Sr by general formula.
What preferably also can design is, first illuminant compound of the first luminescent material component have be selected from nitride or nitrogen oxide class luminescent material as part, (Sr especially
1-x-yBa
xCa
y) Si
2O
2N
2: Eu, it is expressed as SrSiON with shortening below.
This two kind of first illuminant compound that has the part of orthosilicate or SrSiON form just can be realized the absorption of the UV radiation in Hg source with extra high degree, and has at the emission spectrum of green to the yellow spectrum scope.In addition, these first specific illuminant compounds also are particularly suitable for this radiation is transformed in the emission spectrum of luminescent material mixture.
Preferably, first illuminant compound of at least the first luminescent material component is doped with Eu (europium).Preferably, the weight item of Eu doping or mass component are between 0.1% to 15%.This interval is especially between 0.2% to 2%.Prove and particularly preferably be, the mass component that Eu mixes is between 1% to 2%, and especially first illuminant compound comprises SrSiON as part.
What can design is that second illuminant compound of the first luminescent material component comprises Tb as part.Therefore, what especially can design is, the luminescent material mixture has the first luminescent material component, and this first luminescent material component has at the emission spectrum of green to the yellow spectrum scope, and wherein this first luminescent material component comprises at least two kinds of different illuminant compounds.First illuminant compound of the first luminescent material component is no Tb's all the time, and wherein second illuminant compound of this first luminescent material component can contain Tb.So second illuminant compound for the first luminescent material component for example can be provided with luminescent material CAT and/or LAP.
Preferably, when the first luminescent material component comprises second illuminant compound that contains Tb, carry out following design: in the first luminescent material component, the mass component of second illuminant compound that contains Tb is less than the mass component of first illuminant compound of no Tb.Especially, contain this mass component of second illuminant compound of Tb less than the mass component of first illuminant compound that contains Eu of the first luminescent material component
What preferably be provided with usually is that the mass component of the illuminant compound that contains Tb of whole luminescent material mixture is less than the mass component of the illuminant compound that contains Eu of this luminescent material mixture.
Preferably, the second luminescent material component of luminescent material mixture has the emission spectrum ground structure in red color spectrum range.Also programmable is that the second luminescent material component has the illuminant compound that Eu mixes.
Especially, the second luminescent material component has YOE, especially Y2O3:Eu as part.
For the second luminescent material component, specific illuminant compound can be built as YOE:Eu.
Preferably, this luminescent material mixture also comprises the 3rd luminescent material component, and the 3rd luminescent material component has the emission spectrum in blue spectral range.Programmablely be that the 3rd luminescent material component has and comprises BAM or the SCAP illuminant compound as part.What especially can design is that the illuminant compound of the 3rd luminescent material component for example is BAM:Eu or SCAP:Eu.
What can preferably design in addition is, this luminescent material mixture comprises the 4th luminescent material component, and the 4th luminescent material component has the emission spectrum in blue-green region of spectrum.Especially advantageously, the 4th luminescent material component comprises and has the illuminant compound of BAMMn as part.For example, BAM:Mn, Eu can be designed to the illuminant compound of the 4th luminescent material component.Equally, also can design SCAP:Mn as part for the 4th luminescent material component.This specific composition part of the illuminant compound of the 4th luminescent material component also can be doped with Eu.
By will be in the first luminescent material component and the second or the 3rd luminescent material combination of components of in red and blue spectral range, launching, the colour temperature that can regulate expectation especially effectively that green is launched to the yellow spectrum scope.Substitute the mixture that constitutes by three kinds of luminescent material components, also can add the 4th luminescent material component of preferably in blue-green region of spectrum, launching.Can improve the color rendition degree thus.
What can design is, according to the chemical composition part that one of at least only is made of and does not therefore comprise other each described component in luminescent material mixture of the present invention and/or the favourable form of implementation.Yet also programmable is that this is not final composition explanation, but can comprise other chemical composition part, especially other luminescent materials in addition according to luminescent material mixture of the present invention and/or favourable form of implementation yet.
Preferably, the prevailing wavelength of the lamp emission spectrum of whole luminescent material mixture is greater than 540nm.Especially, for the colour temperature less than 2750K, this wavelength is greater than 575nm; For the colour temperature less than 2000K, this wavelength is greater than 585nm; For the colour temperature less than 1750K, this wavelength is greater than 590nm; And for the colour temperature less than 1250K, this wavelength is greater than 600nm.
Should specifically mentionedly be, all chemical formulas at the explanation of luminescent material mixture and illuminant compound are called as desired form, yet all exceed compound this desired form, have (small) deviation on stoichiometry and also together be the present invention includes clearly.This particularly is suitable for as the lower deviation situation: wherein crystal structure keeps identical, and the deviation in emission spectrum and absorption spectrum differs less than 1% aspect the peak position, and differs less than 5% aspect peak width.
Enclose following explanation as the desired form of some other luminescent materials:
CAT represents (Ce, Tb) MgAl11O19; LAP represents (La, Ce, Tb) PO4; BAM represents (Ba, Eu) MgAl10O17; BAMMn represents (Ba, Eu) (Mg, Mn) Al10O17; CBT represents (Gd, Ce, Tb) (Mg, Zn, Mn) B5O10; SCAP represent (Sr, Ba, Ca, Mg, Eu) 5 (PO4) 3 (F, Cl); SCAPMn represent (Sr, Ba, Ca, Mg, Eu, Mn) 5 (PO4) 3 (F, Cl); Zinc silicate is represented (Zn, Mg, Mn) 2SiO4; YOE represents Y2O3:Eu.
Another aspect of the present invention relates to a kind of discharge lamp with discharge vessel, makes up luminous material layer on this discharge vessel.Designed at least one first luminous material layer, it has according to luminescent material the mixture of the present invention or improvement project that it is favourable.
Can realize discharge lamp, especially fluorescent lamp or compact fluorescent lamp thus, they can not have Tb or have the Tb that composition obviously reduces, but and thus cost make up cheaplyer.In addition, can make thus satisfy efficiency grade A and reach the color rendition degree of raising, especially be the discharge lamp of 80 color rendition degree.
Preferably, on the inboard of discharge vessel, directly make up first luminous material layer.
Also programmable is to make up at least one Hg diffusing protection layer between the inboard of first luminous material layer and discharge vessel.Can stop the Hg ions diffusion thus in the glass of discharge vessel.
Preferably, make up protective layer on the upside of the inboard that deviates from discharge vessel of first luminous material layer, this is protective layer used avoids the VUV radiation and/or avoids reaction with the Hg ion in protection first illuminant compound.This radiation damage protective layer or reaction stop protective layer can preferably have Al2O3 and/or Y2O3 as part.At this, wavelength is called as the VUV radiation less than the radiation of 200nm.
Preferably, on the upside of the inboard that deviates from discharge vessel of first luminous material layer, make up second luminous material layer with Tb.Second luminous material layer can for example have CAT-YOE as the luminescent material mixture.The chemical compound that CAT describes by CeMgAl11O19:Tb basically in this expression, the chemical compound that YOE describes by Y2O3:Eu basically in this expression.Except CAT, LAP and/or CBT and/or zinc silicate can be designed to the green luminescent material of alternative.
Preferably design is that first illuminant compound of the first luminescent material component of first luminous material layer is surrounded by protective layer.This protective layer that surrounds first illuminant compound preferably has metal oxide.Thus, metal oxide for example can design according to Al2O3, Y2O3 or SiO2.
Also programmable is that the protective layer that surrounds first illuminant compound has borate and/or phosphate.Can design as aluminium borate and aluminum phosphate as ternary material at this protective layer equally.Usually the material or the metal oxide that preferably have positive surface charge in water are because they have reduced the Hg absorption on trend.Thereby Al2O3 and Y2O3 are special suitable well.On the other hand; the protective layer that surrounds first illuminant compound usually can by SiO2 especially closely, unfertile land and making at an easy rate; and cause improving irradiation stability and water stability; lower surface charge is arranged and higher H g absorption on trend, still same multiple these protective layers of diversely using although make.
Protective layer by such encirclement first illuminant compound; can reach aspect the excitation radiation of relative luminescent material component stable, aspect the low-affinity of Hg relatively and therefore at the lamp duration of work to aspect the low absorbability of Hg and the standard of the stable aspect of the raising in the water; can use current common eco-friendly coating process thus, in these coating processes, adopt water base suspension.
By the coating that together proposes with the protective layer that is used for illuminant compound, can consider satisfying of these standards especially well.In addition, utilize the described particular implementation form of protective layer, can around each luminescent material particle or illuminant compound, realize forming as far as possible closely and thin layer.These protective layers aspect its component with the component of luminescent material granule interior or different with the illuminant compound of intermediate species.The component on surface for example can utilize the method for surface-sensitive such as XPS or SNMS to determine.The intermediate species of luminescent material mixture can utilize the method for volume-sensitive such as EDX, RFA or determine by chemical analysis.
Preferably, the use of therefore such protective layer preferably is designed to cover first illuminant compound of the first luminescent material component of first luminous material layer of discharge lamp.
Programmable is that the luminescent material mixture only has the luminescent material component that all is doped with europium.Preferably, such luminescent material mixture comprises maximum four kinds, especially maximum three kinds of luminescent material components.Be that for the luminescent material component of launching in red color spectrum range, YOE (Y2O3:Eu) is provided as illuminant compound what this can design; For the luminescent material component of launching in blue spectral range, BAM or SCAP are provided as illuminant compound; For the luminescent material component of launching in blue-green region of spectrum, BAMMn or SCAP:Mn are provided as illuminant compound; And for the luminescent material component of launching in green spectral range, SrSiON:Eu or orthosilicate: Eu is provided as first illuminant compound.So this luminescent material mixture can be realized by carrying out multiple choices the luminescent material component that constitutes from each illuminant compound that provides, make and can design multiple different luminescent material mixture.
Preferably, discharge lamp is constructed to low-pressure mercury discharge lamp.Fluorescent tube or compact fluorescent lamp can be designed to discharge lamp.
Description of drawings
Further specify embodiments of the invention below with reference to schematic figures.Wherein:
Fig. 1 shows the schematic sectional view according to a form of implementation of discharge lamp of the present invention;
Fig. 2 show compare with the embodiment that has about the luminescent material mixture of the specific blend ratio of the gross mass of luminescent material mixture according to the present invention, have a emission spectrum according to the discharge lamp of the luminescent material mixture of prior art;
Fig. 3 shows the emission spectrum that has the luminescent material mixture of the different quality ratio between first and second illuminant compounds according to of the present invention;
Fig. 4 shows has on the one hand the photoelectricity value that has on the other hand according to the luminescent material mixture of prior art according to the discharge lamp of the embodiment of luminescent material mixture of the present invention;
Fig. 5 shows curve chart, wherein shows the emission spectrum at the discharge lamp of the colour temperature of 3500K; And
Fig. 6 shows curve chart, wherein shows light output and the color rendition value calculated at different luminescent material.
Preferred implementation
Gone out discharge lamp 1 with schematic cross sectional representation in Fig. 1, this discharge lamp 1 is designed to low-pressure mercury discharge lamp.Discharge lamp 1 is built as bar-shaped, and comprises the discharge vessel 2 of tubulose, and this discharge vessel 2 is glass envelopes.Be mounted with lamp holder 3 in the end of discharge vessel 2, this lamp holder has outward extending electrical contacts 4 and 5.On the opposite side of discharge vessel 2, be provided with lamp holder 6 equally, on this lamp holder 6, be fixed with outward extending electrical contacts 7 and 8.These electrical contacts 7 and 8 are electrically connected with the electrode 10 that extends in the discharge space 13 of discharge vessel 2 by feeder equipment.Electrical contacts 4 is connected with feeder equipment in the corresponding way with 5, and these feeder equipments are connected with another electrode 9, and wherein electrode 9 also extends in the discharge space 13 of discharge vessel 2.
Be built with luminous material layer 12 on the inboard 11 of discharge vessel, this luminous material layer extends on the whole length of discharge vessel 2 in the present embodiment.Luminous material layer 12 directly is structured on inboard 11 in the present embodiment.Shown in form of implementation in luminous material layer 12 only is shown, wherein programmablely be, towards on the upside 14 of discharge space 13 and therefore deviating from the upside 14 of inboard 11 of discharge vessel 2 and also make up other layer.This other layer for example can be to be particularly useful for first illuminant compound of luminous material layer 12 or the protective layer of luminescent material particle.
Equally, on this upside 14, can make up another luminous material layer.Same programmable is to be provided with and to make up other layer between luminous material layer 12 and inboard 11.
Illuminant compound preferably utilizes the protective layer that is made of metal oxide, borate, phosphate or ternary material to surround.
Luminous material layer 12 comprises and has first and the luminescent material mixture of at least one second luminescent material component.The first luminescent material component has at the emission spectrum of green to the yellow spectrum scope.The first luminescent material component comprises first illuminant compound, and this first illuminant compound does not have Tb ground and makes up and be fabricated the UV radiation that is used to absorb by the emission of Hg source.Especially Hg atom in the discharge space 13 and Hg ion are understood that the Hg source, and these Hg atoms and Hg ion are especially launched the UV radiation by Electron Excitation.In addition, first illuminant compound of the first luminescent material component is fabricated the emission spectrum that is used for the UV radiation that is absorbed is transformed into illuminant compound.The mass component of the first luminescent material component on the whole mass component of luminescent material mixture is less than or equal to 50%.In addition, the luminescent material mixture is built as and makes discharge lamp 1 produce the light of colour temperature greater than 2500K.
By with the first luminescent material component and the second luminescent material component and the combined colour temperature that can regulate expectation of the 3rd luminescent material component, wherein this first luminescent material component is designed to launch to the yellow spectrum scope in green, this second luminescent material component is fabricated and is used for launching in red color spectrum range, and the 3rd luminescent material component is fabricated and is used for launching at blue spectral range.Replace luminescent material mixture with three kinds of luminescent material components, also programmablely be, the luminescent material mixture comprises be fabricated the 4th luminescent material component that is used for launching in blue-green region of spectrum.Can improve the color rendition degree by adding the 4th such luminescent material component.
Programmablely in a kind of form of implementation be that the luminescent material mixture comprises (Ba, Sr, Ca) 2SiO4:Eu or (Ca) SiON:Eu is as first illuminant compound of the first luminescent material component for Ba, Sr.The illuminant compound that YOE:Eu can be designed to the second luminescent material component is used for launching in red color spectrum range.In addition, BAM or the SCAP:Eu illuminant compound that can be designed as the 3rd luminescent material component is used for launching in blue spectral range.Additionally, the BAMMn:Eu luminescent material that can be designed as the 4th luminescent material component is used for launching in blue-green region of spectrum.So the luminescent material mixture is made up of three kinds or four kinds of luminescent material components, wherein can select from described illuminant compound.
In another embodiment, the luminescent material mixture can be made up of the luminescent material component more than three kinds, wherein equally can be once again from selecting the illuminant compound of explanation in the above.Additionally, what can design in this embodiment is, contains that Tb ground makes up and for example can be second illuminant compound of CAT or LAP for the first luminescent material design of components.The chemical compound that CAT describes by CeMgAl11O19:Tb basically in this expression.Thus, LAP represents to pass through basically LaPO4:Ce, the chemical compound that Tb describes.
Importantly: the mass component of luminescent material that contains Tb is less than the mass component of the illuminant compound that contains Eu of the first luminescent material component of launching in green spectral range.
Figure 2 illustrates curve chart, wherein show the emissive porwer that the precentagewise relevant with wavelength X represented.Emission spectrum is the emission spectrum according to the discharge lamp of Fig. 1 shown in figure 2.At this, be shown in dotted line the emission spectrum that makes up according to prior art and therefore comprise the discharge lamp 1 of luminous material layer, this luminous material layer comprises Y2O3:Eu (L581H) and CAT as illuminant compound.
By solid line the emission spectrum according to discharge lamp 1 of the present invention according to Fig. 1 is shown in addition in Fig. 2, wherein luminous material layer 12 has according to luminescent material mixture of the present invention.In the emission spectrum according to Fig. 2, the luminescent material mixture that is made of Y2O3:Eu (L581H) is set up as second illuminant compound, and is set up as first illuminant compound by SrSiON:Eu.In the described specific embodiment of luminescent material mixture according to the present invention, the mixing ratio of two kinds of illuminant compounds be respectively the luminescent material mixture gross mass 50% (50/50).In this embodiment, first illuminant compound is doped with Eu, and wherein the mass component of Eu or weight item are 1%.Mass component 50/50 at be 100 gross mass.
Figure 3 illustrates curve chart, wherein show the emissive porwer I that the precentagewise relevant with wavelength X represented.In curve chart according to Fig. 3, show the different quality ratio that has between two kinds of illuminant compounds of luminescent material mixture, according to the emission spectrum of the various embodiment of luminescent material mixture of the present invention.As finding out in this curve chart, the luminescent material mixture utilizes its emission spectrum to represent, wherein the mass distribution between the second illuminant compound Y2O3:Eu (L581H) and the first illuminant compound SrSiON:Eu comprises 50% to 50% (50/50), 75% to 25% (75/25) and 90% to 10% (90/10).According to the emission spectrum of above-mentioned three kinds of different forms of implementation of luminescent material mixture of the present invention with described order by heavy line, illustrate by a dotted line and by fine line.
Photoelectricity value according to the discharge lamp that is built as the bar-shaped lamp of T8L36W 1 of Fig. 1 has been shown in the form according to Fig. 4.For this reason, when luminous material layer 12 comprises different embodiment according to luminescent material mixture of the present invention respectively, show the photoelectricity value of this discharge lamp 1 according to first three rows.When described discharge lamp 1 makes up with luminescent material commonly known in the art, in last fourth line, enclose the explanation of photoelectricity value as a comparison according to the form of Fig. 4 in luminescent layer.
In the simplification view according to the discharge lamp 1 of Fig. 1, luminous material layer 12 directly is placed on the inboard 11 of discharge vessel 2.For example protective layer or the like is not shown in sketch for other luminous material layers or additional other layer.
Yet also programmable is that discharge vessel 2 has at least one other additional coating.Programmablely at this be between the inboard 11 of discharge vessel 2 and first luminous material layer 12, to make up at least one additional coating.Preferably, this therebetween layer is built as the protective layer that spreads at the Hg to the glass of discharge vessel 2.
Additionally or be alternative in that this place is programmable to be, at least two first luminous material layers 12 are structured on the discharge vessel 2.
Also programmable is from the view according to Fig. 1, to make up other layer on the upside 14 of first luminous material layer 12.Should can be protective layer equally towards the other layer of discharge space 13, this protective layer be avoided the radiation damage in the VUV spectral region for the illuminant compound of protecting first luminous material layer 12 or is avoided reaction with the Hg ion.
Corresponding coating also can be applied directly on each illuminant compound or luminescent material particle of luminescent material mixture of first luminous material layer 12.For example, such radiation damage protective layer and/or reaction stop protective layer can be built as Al2O3 protective layer or Y2O3 protective layer.
Additionally or be alternatively to that this place is programmable to be, on discharge vessel 2, make up at least one and have first luminous material layer 12 according to luminescent material mixture of the present invention, wherein can settle the second additional luminous material layer (not shown) between discharge space 13 and this first luminous material layer 12, this second additional luminous material layer has Tb (terbium) as part.Especially, there is not Tb ground to make up first luminous material layer that has according to luminescent material mixture of the present invention.Second luminous material layer for example can have the luminescent material mixture that is made of illuminant compound CAT and YOE.
The embodiment that sets forth to some extent also can make up mutually in any way, make the different layer that can obtain each luminous material layer and protective layer constitute and structure.
In Fig. 5, by superposeing to determine and illustrate emission spectrum (x/y is 0.439/0.409) at the discharge lamp 1 of the colour temperature of 3500K.When wavelength X is 450nm, can find out the additional emission that produces by blue emitting material compd B AM:Eu.In the curve chart shown in Figure 5, the luminescent material mixture comprises illuminant compound Y
2O
3: Eu, BAM:Eu and SrSiON:Eu.
Drawn when measuring the dominant wavelength (lambda_dom) of lamp pattern, the data (measurement point) of compact fluorescent lamp (CFL) and the data of bar-shaped lamp (FL) are very well consistent.
The lamp emission spectrum that produces by described luminescent material mixture has been realized the dominant wavelength in the following scope:
Preferably, the dominant wavelength of the lamp emission spectrum of whole luminescent material mixture is greater than 540nm.Especially, for the colour temperature less than 2750K, this dominant wavelength is greater than 575nm; For the colour temperature less than 2000K, this dominant wavelength is greater than 585nm; For the colour temperature less than 1750K, this dominant wavelength is greater than 590nm; And for the colour temperature less than 1250K, this dominant wavelength is greater than 600nm.
At this, in CIE 1931 xy chromatic graphs, determine dominant wavelength.This dominant wavelength is corresponding to the wavelength of spectral color track (boundary curve of chromatic graph), on this spectral color track, pass the white point at x=0.313 and y=0.337 place and the measured chromaticity coordinate x of luminescent material mixture, the straight line of y and spectral color intersection of locus.
Figure 6 illustrates curve chart, wherein showing relevant with wavelength, unit is light output and the color rendition value Ra of lm/W, wherein shows the curve trend for three kinds of different luminescent material orthosilicate, SiON and CAT.By Computer Simulation, mix calculating accessible smooth output [lm/W] and color rendition degree Ra in lamp T8 L36W/840 (colour temperature 4000K, color rendition index＞80) at different RGB three bands.In this mixture, adopt identical red illuminating material YOE, identical blue emitting material BAM respectively, but adopt different green luminescent materials.Except CAT (as the benchmark green luminescent material that contains terbium), but select green luminescent material that the Eu2+ of two kinds of different alternatives activates as green luminescent material: have desired form (Sr, Ba, Eu)
2SiO
4Orthosilicate and have the SiON of desired form SrSi2O2N2:Eu.The emission spectrum that three kinds of green luminescent materials are compared is shown in Figure 6.
In calculating based on following hypothesis:
(a) all luminescent materials have identical QE=80%.
(b) the LED luminescent material absorbs the Hg radiation of 405nm, 407nm, 436nm fully, and changes these Hg radiation according to its quantum output.
As result calculated, draw the light output of 94.3lm/W and 82.3 CRI value for CAT.Draw the light output of 88.3lm/W and 86.0 CRI value for orthosilicate.Draw the light output of 94.8lm/W and 80.5 CRI value for SiON.
Claims (41)
1. luminescent material mixture that is used for discharge lamp (1), this luminescent material mixture has the first luminescent material component and at least one second luminescent material component, it is characterized in that, the first luminescent material component has the emission spectrum in green and/or yellow spectrum scope and comprises first illuminant compound, and this first illuminant compound does not have Tb ground and makes up and be fabricated the UV radiation that is used to absorb by the emission of Hg source.
2. luminescent material mixture according to claim 1 is characterized in that, first illuminant compound of the first luminescent material component is fabricated the emission spectrum that is used for the UV radiation that is absorbed is transformed into first illuminant compound.
3. each described luminescent material mixture in requiring according to aforesaid right is characterized in that, can recently regulate the colour temperature of institute's radiation emitted according to the quality that can regulate between the first luminescent material component and the second luminescent material component.
4. luminescent material mixture according to claim 3 is characterized in that the mass component of the first luminescent material component is less than or equal to 50%.
5. according to claim 3 or 4 described luminescent material mixtures, it is characterized in that, the colour temperature greater than 2500K can be set.
6. each described luminescent material mixture in requiring according to aforesaid right is characterized in that, first illuminant compound of the first luminescent material component has strong absorption for wavelength less than the radiation of 440nm.
7. each described luminescent material mixture in requiring according to aforesaid right is characterized in that, first illuminant compound of the first luminescent material component has very strong absorption for wavelength for the radiation of about 254nm.
8. each described luminescent material mixture in requiring according to aforesaid right is characterized in that, first illuminant compound of the first luminescent material component has weak absorption for wavelength greater than the radiation of 530nm.
9. each described luminescent material mixture in requiring according to aforesaid right is characterized in that the emission spectrum of first illuminant compound of the first luminescent material component has at 530nm to the dominant wavelength between the 570nm.
10. each described luminescent material mixture in requiring according to aforesaid right is characterized in that the half breadth of the emission band of first illuminant compound of the first luminescent material component is less than 100nm.
11., it is characterized in that first illuminant compound of the first luminescent material component has orthosilicate according to each described luminescent material mixture in the aforesaid right requirement.
12. luminescent material mixture according to claim 11 is characterized in that, orthosilicate by formula (Ba, Sr, Ca)
2SiO
4Form.
13., it is characterized in that first illuminant compound of the first luminescent material component has nitride or nitrogen oxide, especially SrSiON as part according to each described luminescent material mixture in the claim 1 to 10.
14., it is characterized in that first illuminant compound of at least the first luminescent material component is doped with Eu according to each described luminescent material mixture in the aforesaid right requirement.
15. luminescent material mixture according to claim 14 is characterized in that, the mass component that Eu mixes is between 0.1% to 15%.
16. luminescent material mixture according to claim 15 is characterized in that, the mass component that Eu mixes is between 1% to 2%.
17. according to each described luminescent material mixture in the aforesaid right requirement, it is characterized in that the first luminescent material component has second illuminant compound, this second illuminant compound contains Tb ground and makes up.
18. luminescent material mixture according to claim 17 is characterized in that, second illuminant compound has CAT and/or LAP as part.
19., it is characterized in that in the first luminescent material component, the mass component of second illuminant compound that contains Tb is less than the mass component of first illuminant compound of no Tb according to claim 17 or 18 described luminescent material mixtures.
20., it is characterized in that the second luminescent material component has the emission spectrum in red color spectrum range according to each described luminescent material mixture in the aforesaid right requirement.
21., it is characterized in that the second luminescent material component has the illuminant compound that is doped with Eu according to each described luminescent material mixture in the aforesaid right requirement.
22., it is characterized in that the second luminescent material component has YOE, especially Y according to each described luminescent material mixture in the aforesaid right requirement
2O
3As part.
23. according to each described luminescent material mixture in the aforesaid right requirement, it is characterized in that this luminescent material mixture comprises the 3rd luminescent material component, the 3rd luminescent material component has the emission spectrum in blue spectral range.
24. luminescent material mixture according to claim 23 is characterized in that, the 3rd luminescent material component has and comprises BAM or the SCAP illuminant compound as part.
25., it is characterized in that the illuminant compound of the 3rd luminescent material component is doped with Eu according to claim 23 or 24 described luminescent material mixtures.
26. according to each described luminescent material mixture in the aforesaid right requirement, it is characterized in that this luminescent material mixture comprises the 4th luminescent material component, the 4th luminescent material component has the emission spectrum in blue-green region of spectrum.
27. luminescent material mixture according to claim 26 is characterized in that, the 4th luminescent material component has and comprises the illuminant compound of BAMMn as part.
28., it is characterized in that the illuminant compound of the 4th luminescent material component is doped with Eu according to claim 26 or 27 described luminescent material mixtures.
29. discharge lamp with discharge vessel (2), on this discharge vessel (2), be built with luminous material layer (12), it is characterized in that, be built with at least one first luminous material layer (12), described at least one first luminous material layer (12) has according to each described luminescent material mixture in the aforesaid right requirement.
30. discharge lamp according to claim 29 is characterized in that, first luminous material layer (12) directly is structured on the inboard (11) of discharge vessel (2).
31. discharge lamp according to claim 29 is characterized in that, is built with at least one Hg diffusing protection layer between the inboard (11) of first luminous material layer (12) and discharge vessel (2).
32. according to each described discharge lamp in the claim 29 to 31; it is characterized in that; on the upside (14) of the inboard that deviates from discharge vessel (2) (11) of first luminous material layer (12), be built with protective layer, be used to protect first illuminant compound to avoid the VUV radiation and/or avoid reaction with the Hg ion.
33. discharge lamp according to claim 32 is characterized in that protective layer has Al
2O
3And/or Y
2O
3As part.
34. according to each described discharge lamp in the claim 30 to 34, it is characterized in that, be built with second luminous material layer on the upside (14) of the inboard that deviates from discharge vessel (2) (11) of first luminous material layer (12), this second luminous material layer has Tb.
35. discharge lamp according to claim 34 is characterized in that, second luminous material layer has the CAT-YOE mixture as illuminant compound.
36., it is characterized in that first illuminant compound of the first luminescent material component of first luminous material layer (12) is surrounded by protective layer according to each described discharge lamp in the claim 30 to 35.
37. discharge lamp according to claim 36 is characterized in that, the material composition of protective layer is different from first illuminant compound of the first luminescent material component.
38., it is characterized in that the protective layer that surrounds first illuminant compound has metal oxide according to claim 36 or 37 described discharge lamps.
39., it is characterized in that the protective layer that surrounds first illuminant compound has borate and/or phosphate according to each described discharge lamp in the claim 36 to 38.
40., it is characterized in that the protective layer that surrounds first illuminant compound has SiO according to each described discharge lamp in the claim 36 to 39
2
41. according to each described discharge lamp in the claim 29 to 40, this discharge lamp is built as low-pressure mercury discharge lamp.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007033026.1 | 2007-07-16 | ||
| DE102007033026A DE102007033026A1 (en) | 2007-07-16 | 2007-07-16 | Phosphor mixture for a discharge lamp and discharge lamp, in particular Hg low-pressure discharge lamp |
| PCT/EP2008/058935 WO2009010438A1 (en) | 2007-07-16 | 2008-07-09 | ILLUMINANT MIXTURE FOR A DISCHARGE LAMP AND DISCHARGE LAMP, IN PARTICULAR AN Hg LOW PRESSURE DISCHARGE LAMP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101689472A true CN101689472A (en) | 2010-03-31 |
| CN101689472B CN101689472B (en) | 2013-11-06 |
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ID=39816991
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800246254A Expired - Fee Related CN101689472B (en) | 2007-07-16 | 2008-07-09 | Illuminant mixture for a discharge lamp and discharge lamp, in particular an hg low pressure discharge lamp |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8729786B2 (en) |
| EP (1) | EP2165351B1 (en) |
| JP (1) | JP5232228B2 (en) |
| CN (1) | CN101689472B (en) |
| AT (1) | ATE544172T1 (en) |
| DE (1) | DE102007033026A1 (en) |
| WO (1) | WO2009010438A1 (en) |
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|---|---|---|---|---|
| DE102007033028A1 (en) * | 2007-07-16 | 2009-01-22 | Osram Gesellschaft mit beschränkter Haftung | Discharge lamp and phosphor connection for a discharge lamp |
| DE102007033029A1 (en) * | 2007-07-16 | 2009-01-22 | Osram Gesellschaft mit beschränkter Haftung | Phosphor mixture for a discharge lamp and discharge lamp, in particular Hg low-pressure discharge lamp |
| KR101670107B1 (en) * | 2009-02-05 | 2016-11-09 | 씨씨에스 가부시키가이샤 | Led light emitting device |
| JP5105132B1 (en) * | 2011-06-02 | 2012-12-19 | 三菱化学株式会社 | Semiconductor light emitting device, semiconductor light emitting system, and lighting fixture |
| DE102012203419A1 (en) | 2011-07-29 | 2013-01-31 | Osram Ag | Phosphor and fluorescent lamp containing the same |
| US9142397B2 (en) * | 2011-10-25 | 2015-09-22 | General Electric Company | High color rendering index fluorescent lamp with multi-layer phosphor coating |
| US8531098B2 (en) | 2011-11-29 | 2013-09-10 | General Electric Company | Phosphor blends for fluorescent lamps |
| DE102013105056A1 (en) | 2013-05-16 | 2014-11-20 | Osram Opto Semiconductors Gmbh | Process for the preparation of a phosphor, phosphor and optoelectronic component |
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| US5049779A (en) | 1989-05-02 | 1991-09-17 | Nichia Kagaku Kogyo K.K. | Phosphor composition used for fluorescent lamp and fluorescent lamp using the same |
| EP0550937B1 (en) * | 1992-01-07 | 1997-03-19 | Koninklijke Philips Electronics N.V. | Low-pressure mercury discharge lamp |
| US5714836A (en) * | 1992-08-28 | 1998-02-03 | Gte Products Corporation | Fluorescent lamp with improved phosphor blend |
| JPH097545A (en) | 1995-06-15 | 1997-01-10 | Nec Home Electron Ltd | Fluorescent lamp |
| JPH10106494A (en) | 1996-09-26 | 1998-04-24 | Matsushita Electron Corp | Phosphor for mercury vapor discharge lamp |
| JP2000067813A (en) | 1998-08-26 | 2000-03-03 | Matsushita Electric Works Ltd | Fluorescent lamp and light source using it |
| JP2001200249A (en) | 2000-01-20 | 2001-07-24 | Tokyo Kagaku Kenkyusho:Kk | Oxidation-resistant phosphor and production method therefor |
| CN1267946C (en) | 2000-08-10 | 2006-08-02 | 奥斯兰姆施尔凡尼亚公司 | Display device having reduced color shift during life |
| JP4634798B2 (en) * | 2002-07-29 | 2011-02-16 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Low pressure mercury vapor discharge lamp |
| US20040113539A1 (en) | 2002-12-12 | 2004-06-17 | Thomas Soules | Optimized phosphor system for improved efficacy lighting sources |
| JP3606277B2 (en) | 2002-12-19 | 2005-01-05 | 日亜化学工業株式会社 | Cold cathode discharge tube and its lighting device |
| JP4991026B2 (en) | 2003-02-26 | 2012-08-01 | 日亜化学工業株式会社 | Light emitting device |
| JP2007513469A (en) * | 2003-11-11 | 2007-05-24 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Low pressure steam discharge lamp filled with mercury-free gas |
| JP4165406B2 (en) | 2004-01-27 | 2008-10-15 | 昭栄化学工業株式会社 | Phosphor |
| JP2006098034A (en) | 2004-09-29 | 2006-04-13 | Hirotoshi Kaneyama | Freshness holding method for meat, fresh fish, daily dish, paste and produce, and multi-stage cold storage open case |
| TW200625380A (en) | 2004-10-07 | 2006-07-16 | Matsushita Electric Ind Co Ltd | Fluorescent lamp, backlight apparatus, and manufacturing method of fluorescent lamp |
| JP5329759B2 (en) | 2004-11-11 | 2013-10-30 | 株式会社東芝 | Method for evaluating and selecting phosphor, LED lamp, and method for manufacturing light emitting device |
| JP2006190658A (en) | 2004-12-07 | 2006-07-20 | Matsushita Electric Ind Co Ltd | Fluorescent lamp |
| CN101137738A (en) | 2005-03-08 | 2008-03-05 | 皇家飞利浦电子股份有限公司 | Illumination system comprising a radiation source and a luminescent material |
| CN100592452C (en) | 2005-07-29 | 2010-02-24 | 松下电器产业株式会社 | Method of producing fluorescence substance suspension, fluorescent lamp, backlight unit, directly-below type backlight unit and liquid crystal display unit |
| US20080284306A1 (en) * | 2005-11-10 | 2008-11-20 | Koninklijke Philips Electronics, N.V. | Low-Pressure Mercury Vapor Discharge Lamp and Compact Fluorescent Lamp |
| WO2007066733A1 (en) | 2005-12-08 | 2007-06-14 | National Institute For Materials Science | Phosphor, process for producing the same, and luminescent device |
| JPWO2007111246A1 (en) | 2006-03-24 | 2009-08-13 | パナソニック株式会社 | Fluorescent lamp, backlight unit, and liquid crystal display device |
| DE102007033029A1 (en) | 2007-07-16 | 2009-01-22 | Osram Gesellschaft mit beschränkter Haftung | Phosphor mixture for a discharge lamp and discharge lamp, in particular Hg low-pressure discharge lamp |
| DE102007033028A1 (en) | 2007-07-16 | 2009-01-22 | Osram Gesellschaft mit beschränkter Haftung | Discharge lamp and phosphor connection for a discharge lamp |
-
2007
- 2007-07-16 DE DE102007033026A patent/DE102007033026A1/en not_active Withdrawn
-
2008
- 2008-07-09 EP EP08774940A patent/EP2165351B1/en not_active Not-in-force
- 2008-07-09 WO PCT/EP2008/058935 patent/WO2009010438A1/en active Application Filing
- 2008-07-09 CN CN2008800246254A patent/CN101689472B/en not_active Expired - Fee Related
- 2008-07-09 AT AT08774940T patent/ATE544172T1/en active
- 2008-07-09 US US12/452,193 patent/US8729786B2/en not_active Expired - Fee Related
- 2008-07-09 JP JP2010516466A patent/JP5232228B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010533944A (en) | 2010-10-28 |
| WO2009010438A1 (en) | 2009-01-22 |
| EP2165351A1 (en) | 2010-03-24 |
| JP5232228B2 (en) | 2013-07-10 |
| ATE544172T1 (en) | 2012-02-15 |
| EP2165351B1 (en) | 2012-02-01 |
| US20100102704A1 (en) | 2010-04-29 |
| US8729786B2 (en) | 2014-05-20 |
| DE102007033026A1 (en) | 2009-01-22 |
| CN101689472B (en) | 2013-11-06 |
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